Jurnal Sains Teknologi dan Lingkungan (JSTL)
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Analisis Kesesuaian Pengembangan Wisata Pantai Elak-Elak di Kabupaten Lombok Barat
Full text linkThe development of Elak-Elak Beach needs to consider the appropriate requirements for tourism activities. The suitability of coastal and marine resources aims to adapt to tourism activities, with the aim of preventing environmental damage in coastal areas due to tourism activities. Environmental problems in the aquatic environment (pollution) are caused by inappropriate activities in coastal environments such as tourism. This study aims to determine the suitability of Elak-Elak Beach for sustainable beach tourism and determine the carrying capacity value of the Elak-Elak Beach area. Data collection was carried out on December 6, 2023. The method used was field observation with the collection of tourism suitability data. The results of the measurement of the Tourism Suitability Index (TSI) are suitable for beach tourism, with the TSI value at 4 stations suitable for beach tourism, namely station 1 with a value of 2.825, station 2 of 2.595, station 3 of 2.22, and station 4 of 2.655. With a capacity for the category of beach recreation 214 people/day, sports tourism 136 people/day. camping 192 people/day, sitting relax 384 people/day, sunbathing 136 people/day, and swimming 315 people/day
Respon Tanaman Sawi Hijau (Brassica juncea L.) dan Status Hara Nitrogen Tanah Terhadap Pemberian Pupuk Kandang dan Phonska Pada Berbagai Dosis
Full text linkThis research aims to determine the response of green mustard plants (Brassica juncea L.) to the application of cattle manure and phonska at various rates, and to determine Nitrogen status of the soils. The experiment was set up using a Completely Randomized Design (CRD) which consisted of 2 factors. The first factor was the application of 15:15:15 phonska with three doses, namely ; P1 = 100 kg/ha, P2 = 200 kg/ha, and P3 = 300 kg/ha. The second factor was cattle manure in 4 doses, namely ; K1 = 5 tons/ha, K2 = 10 tons/ha, K3 = 15 tons/ha, and K4 = 20 tons/ha. So that obtain 12 treatments. Each treatment was repeated 3 times, resulting in 36 experimental polybags. The results showed that the interaction of cattle manure and Phonska had influence on plant parameters, namely plant height at 28 days after planting, fresh and dry weight, and fresh weight of root, while on soil parameters, namely pH and C-Organic. The application of Phonska had a significant effect on plant parameters, namely plant height at 14 and 28 days after planting, number of leaves at 14, 21 and 28 days after planting, leaf area, fresh and dry weight, and fresh weight of root, while soil parameters such as soil pH and C-Organic. And cattle manure had a significant on soil parameters, namely pH and total soil N
Study Efisiensi Reproduksi Kambing Kacang dan Hasil Persilangannya Dengan Kambing Boer (Boerka) di Lombok
Full text linkThis research was carried out with the aim of determining the reproductive efficiency of Kacang goats and goats resulting from crosses with Boer goats (Boerka goats). This research was carried out in the area of ​​development of the Kacang goat and a cross between the Kacang goat and the Boer goat (Boerka) in Lombok with the aim of determining the level of reproductive efficiency of the Boerka goat and the Kacang goat in the people's breeding business. The variables observed include: An Estrus Post Partum, Open Days, service per conception, service period and kid interval, litter size and first mating after giving birth. Location determination was carried out using purposive sampling based on the breed of goats being kept. Livestock samples were taken randomly from 60 mother goats (30 Kacang mother goats and 30 Boerka mother goats). The observation data was tabulated using the Excel program and then analyzed using the t-test. Data analysis activities use Genstat software. Goat race/breed has no significant effect (P > 0.05) on the first estrus after giving birth, service conception and number of offspring per birth, but has a significant effect (P < 0.05) on service period, days open and calving interval (kid interval). The calving interval for the mother Kacang goat is longer, namely 253.00 ± 14.87 days (8.4 months) compared to the mother Boerka goat, namely 234.86 ± 07.09 days (7.8 months)
Karsinoma Nasofaring, Review
Full text linkNasopharyngeal carcinoma is a malignancy that arises due to abnormal growth of body cells that appear in the nasopharyngeal area, namely the area above the throat and behind the nose. Almost 60% of malignant tumors of the head and neck are nasopharyngeal carcinomas, followed by malignant tumors of the nose and paranasal sinuses (18%), larynx (16%), and oral cavity tumors. Nasopharyngeal carcinoma is endemic in certain regions of the world, especially in Southeast Asia, and has a poor prognosis, with the highest incidence in southern China. Indonesia is one of the countries with a high prevalence of nasopharyngeal cancer patients. The average prevalence recorded is 6.2 cases per 100,000 Indonesian population with 13,000 new cases of nasopharyngeal carcinoma each year
VOCs (Volatile Organic Compounds) Concentration Measurement in Human-Exhaled Breath - A Preliminary Study: Measurement of VOC Levels in Human-Exhaled Breath
Full text linkVOC is a group of organic compounds that easily evaporate into the atmosphere and have various impacts on human health and the environment. Human exhaled breath and VOC is related to each other. The concentration of VOC differs from an abnormal condition to other abnormalities. However, there is limited information or study about VOC concentration in human exhaled breath. In line with this, this study aims to develop a VOC meter or a measurement system using a CCS811 sensor for human exhaled breath. This study used a CCS811 sensor, a microcontroller, and a suction pump installed inside a sensor box. The system was calibrated using filtered and non-filtered air. The system was tested using varying flow rates. At the final test, the system was tested to measure VOC levels in human exhaled breaths. The results show that the VOC measurement system can measure VOC levels in different air conditions for both filtered and non-filtered air. The use of different flow rates influences the system's performance. The highest sensitivity level is obtained at 0.7 m/s of the flow rate of the suction pump. The system was also able to measure VOC concentrations of the human exhaled breath with concentrations of 0 ppb to 1156 ppb. The VOC concentrations of human exhaled breath depend on many factors that should be further analyzed, including the medical treatment history, food consumption, placebo effect, and many other parameters
Analisa Tingkat Keselamatan Lalu Lintas Pada Simpang Bengkel Dengan Metode Traffic Conflict Technique (TCT)
Full text linkSimpang empat Bengkel Kabupaten Lombok Barat adalah persimpangan yang memiliki tingkat kemacetan yang sangat padat pada peak hour. persimpangan ini sering terjadinya konflik lalu lintas yang dapat menyebabkan kecelakaan. Sehingga perlu pencegahan untuk mengurangi jumlah kecelakaan lalu lintas hingga diharapkan menjadi zero accident. Penelitian ini menggunakan Metode Traffic conflict technique (TCT) digunakan untuk mengolah data pada persimpangan. Hasil pengolahan data dengan metode Traffic Conflict Technique (TCT), maka didapatkan hasil bahwa Konflik untuk tingkat keseriusan yang sering terjadi adalah konflik serius. Dimana persentasi untuk konflik serius yaitu 94 % sedangkan untuk konflik yang tidak serius yaitu 6 %. Konflik-konflik tersebut melibatkan pengendara sepeda motor sebesar 100 kendaraan, pengendara kendaraan ringan sebesar 46 kendaraan dan pengendara kendaraan berat sebesar 18 kendaraan. Dimana jumlah tindakan mengerem sebesar 67 kejadian konflik, tindakan mengelak sebesar 9 kejadian konflik dan tindakan mempercepat kendaraan sebesar 6 kejadian konflik. Sehingga tingkat kecelakaan yang terjadi di simpang Bengkel Kabupaten Lombok Barat sangat tinggi
Komposisi Nutrisi Maggot Yang Dibudidaya pada Media Berbasis Limbah Telur Infertil dan Ampas Tahu
Full text linkThis research aims to reveal information about the nutritional content of maggots cultivated using hatching egg waste as a feed medium. Carried out in two stages, the first stage involves rearing maggots using hatching egg waste and tofu dregs, while the second stage focuses on analyzing the nutritional content of maggots. The research involved five treatments and four replications, with controls P0 (100% tofu dregs), P1 (75% tofu dregs + 25% egg hatching waste), P2 (50% tofu dregs + 50% egg hatching waste), P3 (tofu dregs 25% + 75% egg hatching waste, and P4 (100% egg hatching waste). Each replication used one gram of BSF fly eggs, with tofu dregs and egg hatching waste being fed as much as 20 kg/biopond during rearing. The variables observed involved dry matter, ash content, crude fat, crude fiber, and crude protein. The results showed that P4 treatment produced maggots with the highest nutritional content, especially in terms of crude protein. In conclusion, the best food media was found in treatment P4, providing the potential to improve the nutritional quality of maggots as an alternative food source
Hasil Dan Nisbah Kesetaraan Lahan Dua Varietas Cabai Merah (Capsicum annum L.) Yang Ditumpangsarikan Dengan Kacang Tanah Di Lahan Kering
Full text linkDrylands with limited resource support need to increase their productivity. One indicator of land productivity is the land equivalence ratio (LER). This research aimed to study the growth and yield of red chili due to the effect of varieties and peanut planting times in intercropping systems to increase dryland productivity. One experiment was conducted in Amor-amor Hamlet, Gumantar Village, Kayangan Sub-district, North Lombok Regency, from March to August 2023. The red chili varieties tested were Baja MC (hybrid) and Landung (non-hybrid). Meanwhile, peanut (Hypoma 2 variety) planting time was at the same time, one week after planting (WAP) of chili and 3 WAP. The treatments were arranged factorially using a Randomized Block Design with three replications. All component crops had monoculture treatments to calculate LER. The results showed no interaction between variety and planting time on all parameters observed. Variety had no significant effect on growth and LER but significantly affected the yield of chili. The Landung variety produced higher yields than the Baja MC variety. Planting time treatment had no significant effect on growth and LER but significantly affected the yield of chili. The planting time of peanut that produced the highest yield was 3 WAP. The intercropping of chili with peanuts at all planting times increased dryland productivity with LER values greater than 1.
Model Matematik Prediksi Pembentukan Biogas dari Limbah Kotoran Ternak
Full text linkPetroleum is currently the most commonly used fuel in Indonesia, but its availability is decreasing! Therefore, alternative energy sources are needed. One solution is to convert agricultural and livestock waste into biogas, which is a renewable and environmentally friendly energy source! Biogas can be used for cooking, generating electricity, and even as fuel for vehicles! The aim of this research is to develop a mathematical model for predicting biogas volume! Can you believe it? The experiment involved creating biogas from a mixture of cow dung and water in a 1:2 ratio. The mixture was stirred until evenly distributed in a portable biogas floating drum. No gas was formed from the first day until the seventh day, but on the eighth day, gas began to form and its volume was recorded! A mathematical model approach, namely the Gompertz and Logistic Models, was used to predict the formation of biogas volume! And guess what? The results indicate that both models were able to predict the data accurately with a coefficient of determination (R2) of 0.99! The validity test results show that the Gompertz model is the most reliable for making predictions! This is indicated by the bias value of 0.002, MSEP value of 0.000, and EI of 0.058. The validity test value is smaller than the validity test value obtained in the Logistic model, which is a bias value of 0.016, MSEP value of 0.005, and Ei value of 0.329
Kualitas Fisik dan Kimiawi Maggot BSF yang Dibudidaya Oleh Peternak Menggunakan Media Pakan yang Berbeda
Full text linkThis study aims to determine the physical and chemical quality of maggot cultivated by farmers on the island of Lombok using different feed media. The research was conducted in 2 tages, namely: Phase I. Observation of 5 locations of maggot farms on Lombok Island with a production scale of at least 5 kg per week. The parameters observed were the type of feed used, production scale, body weight and body length of maggot per head. Stage II. Analisis of the nutritional quality of feed and maggot media using the Proximate analysis method. Parameters observed were water content, ash content, crude protein, crude fat, and crude fiber. The data collected were tabulated and discussed descriptively. The results showed that there were 4 TPS locations and 1 quail farm location which was assisted with maggot cultivation with a maggot production scale of 7-350 kg per week. The lowest production scale is at the location of the quail farm using quail manure and the highest scale is at the TPS location Ds. Sengkol using kitchen waste as feed media, expired milk, coconut dregs, and banan stems. The protein content of the feed media that had been converted by maggot ranged from 4.51-24.64% and the maggot content produced ranged from 23.0-42.45%, the highest at quail Farm Puyung village which uses quail waste media. The conclusion of this study that the use of quail waste media as a feed medium resulted in the best quality of maggot